Performance evaluation of subband coding and optimization of its filter coefficients

Jiro Katto; Yasuhiko Yasuda

doi:10.1117/12.50249

1 November 1991 Performance evaluation of subband coding and optimization of its filter coefficients

Jiro Katto, Yasuhiko Yasuda

Proceedings Volume 1605, Visual Communications and Image Processing '91: Visual Communication; (1991) https://doi.org/10.1117/12.50249
Event: Visual Communications, '91, 1991, Boston, MA, United States

Abstract

In this paper, two analytical methods to evaluate coding performance of subband coding are proposed, and optimization of its filter coefficients from the viewpoint of energy compaction property is considered. The first method is based on matrix representation of subband coding in time domain, where the coding gain given by Jayant and Noll is introduced as a performance measure for filter banks with orthogonal property. The second method is based on optimum bit allocation problem for subband coding (multirate filter bank), where the unified coding gain is derived as a new performance measure which can be applied to arbitrary transform techniques. We then try to find filter coefficients which maximize the unified coding gain according to input characteristics. This approach leads to optimization of filter coefficients from the viewpoint of energy compaction property.

Citation Download Citation

Jiro Katto and Yasuhiko Yasuda "Performance evaluation of subband coding and optimization of its filter coefficients", Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); https://doi.org/10.1117/12.50249

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